Ответ:
n=106.5/142=0.75моль
P2O5=15×2+8×5=70 e
70×0.75=52.5моль е
52.5×6.02×10²³=316.05×10²³
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Ответ:
n=106.5/142=0.75моль
P2O5=15×2+8×5=70 e
70×0.75=52.5моль е
52.5×6.02×10²³=316.05×10²³